parallel-hashmap/tests/parallel_hash_map_test.cc

#ifndef THIS_HASH_MAP
    #define THIS_HASH_MAP  parallel_flat_hash_map
    #define THIS_TEST_NAME ParallelFlatHashMap
#endif

#include "flat_hash_map_test.cc"

namespace phmap {
namespace priv {
namespace {

TEST(THIS_TEST_NAME, ThreadSafeContains) {
    // We can't test mutable keys, or non-copyable keys with ThisMap.
    // Test that the nodes have the proper API.
    ThisMap<int, int> m = { {1, 7}, {2, 9} };
    const ThisMap<int, int>& const_m(m);
    
    auto val = 0; 
    auto get_value = [&val](const int& v) { val = v; };
    EXPECT_TRUE(const_m.if_contains(2, get_value));
    EXPECT_EQ(val, 9);

    EXPECT_FALSE(m.if_contains(3, get_value));

    auto set_value = [&val](int& v) { v = 11; };
    EXPECT_TRUE(m.if_contains(2, set_value));
    EXPECT_EQ(m[2], 11);
}

}  // namespace
}  // namespace priv
}  // namespace phmap